| IP Address Block |
Address Range |
Number of Addresses |
Scope |
Description |
| 0.0.0.0/8 |
0.0.0.0–0.255.255.255 |
16,777,216 |
Software |
Current network |
| 10.0.0.0/8 |
10.0.0.0–10.255.255.255 |
16,777,216 |
Private network |
Used for local communications within a private network |
| 100.64.0.0/10 |
100.64.0.0–100.127.255.255 |
4,194,304 |
Private network |
Shared address space for communications between a service provider and its subscribers using carrier-grade NAT |
| 127.0.0.0/8 |
127.0.0.0–127.255.255.255 |
16,777,216 |
Host |
Used for loopback addresses to the local host |
| 169.254.0.0/16 |
169.254.0.0–169.254.255.255 |
65,536 |
Subnet |
Used for link-local addresses between two hosts on a single link when no IP address is otherwise specified |
| 172.16.0.0/12 |
172.16.0.0–172.31.255.255 |
1,048,576 |
Private network |
Used for local communications within a private network |
| 192.0.0.0/24 |
192.0.0.0–192.0.0.255 |
256 |
Private network |
IETF Protocol Assignments, DS-Lite (/29) |
| 192.0.2.0/24 |
192.0.2.0–192.0.2.255 |
256
|
Documentation |
Assigned as TEST-NET-1, documentation and examples |
| 192.88.99.0/24 |
192.88.99.0–192.88.99.255 |
256 |
Internet |
Reserved. Formerly used for IPv6 to IPv4 relay |
| 192.168.0.0/16 |
192.168.0.0–192.168.255.255 |
65,536 |
Private network |
Used for local communications within a private network |
| 198.18.0.0/15 |
198.18.0.0–198.19.255.255 |
131,072 |
Private network |
Used for benchmark testing of inter-network communications |
| 198.51.100.0/24 |
198.51.100.0–198.51.100.255 |
256 |
Documentation |
Assigned as TEST-NET-2, documentation and examples |
| 203.0.113.0/24 |
203.0.113.0–203.0.113.255 |
256 |
Documentation |
Assigned as TEST-NET-3, documentation and examples |
| 224.0.0.0/4 |
224.0.0.0–239.255.255.255 |
268,435,456 |
Internet |
In use for IP multicast (Former Class D network) |
| 233.252.0.0/24 |
233.252.0.0-233.252.0.255 |
256 |
Documentation |
Assigned as MCAST-TEST-NET, documentation and examples |
| 240.0.0.0/4 |
240.0.0.0–255.255.255.254 |
268,435,455 |
Internet |
Reserved for future use (Former Class E network) |
| 255.255.255.255/32 |
255.255.255.255 |
1 |
Subnet |
Reserved for the “limited broadcast” destination address |
